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xAI Releases Grok Voice 3.0, Claiming Fastest Speech-to-Speech AI With 97% Full-Duplex Performance

  • Foundation Models
  • AI Agents
  • Sales & Business

xAI unveiled Grok Voice 3.0 on October 14, 2026, a speech-to-speech AI model that ranks first on the Artificial Analysis speech benchmark with an 86.9 index score and handles natural voice conversations with 0.81-second response latency. The new model is available through xAI's API at $0.08 per minute—the same price as its predecessor—making it accessible for commercial voice agent deployments.

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